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Homework Help: How much water is ionized in the lightning?

  1. Feb 4, 2010 #1
    If each water molecule donates one electron,
    how much water is ionized in the lightning?
    One mole of water has a mass of 18.1 g/mol.
    Answer in units of g.

    Avogadro’s number is 6.02214e23 /mol.

    ok so this is what i did...
    (18.1grams/1mole)(1mol/6.02214e23 molecules)=3.005576e-23
    this is wrong since it doesnt give the right units. How would i do this?
  2. jcsd
  3. Feb 5, 2010 #2


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    Science Advisor
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    Gold Member

    Re: Moles

    How many coulombs in that bolt of lightning and what fraction of those electrons are involved in the ionization of water.

    Not enough information but I'm guessing the answer is 42.
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